Earth moving device



Dec. 8,1931. R. l.. HARRISON EARTH MOVING DEVICE Filed Aug. 28 1930 K Patented Dec.; 8,` 1931 y RAYMOND L. HARRISON, or AnBUQUERQun, NRW-MEXICO- EARTH Movmevnnvrcn Application mea August 2 8, 1930. serial no. 478,432.

I 5 It` is one of the primary objects of my invention to-provide a simple and improved earthworking or moving device which may be conveniently and automatically controlled by anV operatorremotely positioned from the 10 earth receiving device or'scraper proper.

vMore specificallyl my inventionv contemplates the provision" of a very simple and improved hydraulic mechanism for controlling the tilting of a scraper or earthjreceiving I V.15 bowl without requiring the use of a hydraulic pump. Y A still further and more specic object of my invention is to provide a Ysubstantially closed hydraulic circuit for controlling the shifting of an earth receiving bowl or scraper, said circuit functioning in response to the force exerted by the mechanism -such as a tractor, which is employedto drawthe scraper over the 'surface of the ground.

These and numerous other objects and advantages will be `more apparent from the following detailed description when considered in connection with the accompanying drawings, wherein: i i

Figure 1 is a side elevational view of an earth working or moving device which is representative of one embodiment of my invention;

' Figure 2 is a similar side elevational view disclosing the scraper. or fresno in a shifted position; and Y Y` v Figure 3` isa plan view of the mechanism as shown in Figure 2.

Referringnow to 'the drawings more in detail, wherein like numerals have been employed to designate similar parts throughout the various figures, it will be observed that one embodiment of my invention includes a draft frame 10, which is pivotally coupled at its rear extremity'on opposite sides of a scraper or fresno bowl 14, through the agency of aosuitable shaft 16. Y

Positioned upon the peripheral surface of the bowl 14 isa lug 18 which is adapted to engage a pivoted latch member 20; This latch member 20Y is pivoted `at 22 upon one extremity'of. afhorizontal shiftable actuator bar24, Vwhich forms a part of an actuator mechanism designated generally by the numeral `26. The latch member 24 `is secured againstV counter- 55 clockwise movementas viewed in Figures 1 and 2, whenv a cooperating section of atrip lever 28 is positioned' as shown in said figures.` 'The operation of this trip lever 28 is manually controlledby anr operatorposia0 `ti'oned in the seat-,B0 ofa tractor (not shown) y through the' agency yof a suitable cord 32.

The actuator 'bar 24 is provided with an *arcuate slot134'which receives a pin 36 carried at the upperend' of a vertical framememc5 'ber 38. y This/arcuate` slot 34 serves when the actuator bar 24 is horizontally shiftedto guidethe latch member 20' in an arcuate path in"conlformitywith the'arcuatetravel of the lugi'7'0 18. The provision ofthis arcuate slot inthe latch member 24 does not form agpart of the present invention except in so far asit enters n into the general `combination thereof, and thel specificconstruction of this arcuately 75 formed portion of the actuating member is covered in my ,co-pending application, Serial Numberv449,911, filed May 5 1930. Itwill suffice, however, to state that asthe actuator p member is shiftedvfrom the forward position 80 shownin Figure 1 to' the rearward position "shown'in Figure 42, `the latchfmember 20 will move in the same arcuate path as the lug 18, thereby maintaining 'proper engagement with said lug. -A coilspring 40V is interposedbe- 85 'tweenthe latch member 20 and the pin 36 and serves to yieldingly urgesaidlatch member in a clockwise direction". I Thev forward extremity -'to the right, ,Y Figures 1 and2, of thek actuator member 24 90 is pivotally connected tothe upper end of an .actuating leverk 42, which-is .pivotally mounted at its intermediatefportion lupon a pin 44, which is adapted to extend through oneof a plurality of apertures 4.6"provided v95 in an upright frame or support48. VThe,

lower extremity of the actuating lever 42 is pivotally'conencted with one end of alshlfter 'rod-50." 7

This shifter rod 50 is'formed in tw'oisecvv100 tions, said sections being connected by a coupler 52. This coupler 52 serves to vary the length of the rod 50. This rod 50 passes through a cylinder 54 and is connected at its outer extremity to the coupling 56 of a tractor or other suitable tractive mechanism (not shown). A suit-able piston 58 is carried by the rod .50 within the cylinder 54. One extremity of the cylinder 54 communicates with one extremity of a tank 60 through the agency of a connecting :pipe 62, while the other extremity of the cylinder 54 is adapted to be connected and disconnected with'respect to the tank 60 through the agency of aV` suitable valve 64. This valve is operated in any suitable manner as by means ofa suitable connector rod ormem-ber 66 which l,extends to a convenient location in the tractive mechanism, as, for example, to a point adjacent to the driverssea-t 80. Y Y p From the foregoingl description it will be apparentthatif the bowl l4ioccupies the `position shown in FigureL 1 with its cutting edge 1,4a positioned below the surface of the ground, anda pulling force is exerted on the `draft frame 10 to the right, earth will' be takenA into said bowl. After -a sufiicient quantity of earth has been-taken into the bowl, and it yis desired to tilt said bowl rearwardly to the position shown in Figure' 2, it is only necessary to open the valve 64. AThis will'permit free, movement of the piston 58 to theright' within its cylinder 54, and this .movement will cause the actuator-lever 42 to 35` be swung in va counter-clockwise direction,

'therebyL causing the'latch member 20-to be urged rearwardly against the lug 18. When the position of the bowl 14 as shown in Figure 2'is reached, the valve may be closed and the tractor drawn across thesurface of the soil without making a cut. The position of the bowl shown in Figure 2v is commonly referred to as a drifting position because the cutting edgezof the bowl is not digging into the ground. If it is desired to 'shift thebowl in astill further rearward counter-clockwise direction, this can be done `by again opening `the valve 64 and allowing the pull of the .tractor to cause the Vactuator 26 to exerta rearward force upon the-lug 18.

When-it is-desired to return the piston 58 .toits yextreme left position within the cylinder 54, it is onlynecessary to stop the tractor, open the' valve 64 and allow the force of a heavyv duty spring 68 to act upon the actuator `lever v42. AThis spring 68 is interposed be- :tween the upper extremity of this lever and -th e- .tanl; 60, and is providedwith a turn buckle f7() for-adjusting the tension thereof.

This lspring 68 will cause the actuator mem- .ber 24to bey urged to theright and when a l pulling force is again applied'to the mechanism, the bowl 24 will be moved to a shifted position, as for example to the position .shown-n Figure l. y

.Vframewitha suitable'tractive means, said In order to obtain variations in the stroke of the actuator lever 42, I employ the series of apertures 46 and companion apertures 46a in the lever. ln this manner I am able to vertically adjust the pivotal point without varying to any substantial degree the vertical shifting of the lever itself.

From lthe foregoing vit will be apparent that when the piston 58 occupies the position shown in Figure 1 and the valve 64 is closed, the fluid` within the 'cylinder 54 willserve as a loch or abutment to prevent relative movement between the draft frame 10 andjsaid piston. In vother words, under such conditions, when a pulling force to the right is applied't-eithe rod 50, the fluid body to the right-of the lpiston 58 will preventrelative movement between said piston and the draft frame. Onv the other. hand, when the valve 64 is open,fand a similar force is applied to kthe piston 50, fluid fromthe cylinder 54 will illow throngh'the valve 64 into the tank 60 'and from the tank 60-fiuidwill be returned to the opposite end of the cylinder 54 through tliepipe 62. Thus a closed hydraulic circuit is presented which enables theY piston 58 to be locked in any position within the cylindex-5 4. Y

. Tt might bev said thatrthe mechanism includingthe -shiftable rod 50the cylinder 54,-`

the piston 58, the tank 60, and the fluid body u therein, comprises. a hydraulic mechanism which Aserves as means for coupling the draf-t Aframe 10 with anyvsuitable tractive means such a tractor or other vehicle (not shown) Furthermore, this hydraulic mechanism is iupled with the bowl actuating device, namely,l the actuator member 24 and the lever 42, andtlnlsserves to control the tilting of said bowl.v f

Having Vthus described my invention, what Vl'clan'n as new and desire to secure by Letters Eatent is: i

1. ln an earth moving device adapted to be moved across the surface of the ground, a tiltable earth carrying means having a materialreceiving edge, a draft frame pivot-ally supporting said earth carrying means, a hydraulicmechanism providing a coupling betweensaid draft frame andy means for applying a tractive force to said draft frame, said khydraulic mechanism including a cylinder, a

for )ivotall su a aortinfr said earth receiving y C .s

means, a mechanism for connecting said draft mechanism including a cylinder, a piston shiftable within said cylinder, means for connecting said piston with said tractive means, a fluid body within said cylinder, means for conducting fluid from one extremity of said cylinder to the opposite extremity thereof, and means for actuating said earth carrying means, said actuatino' means being operable in response to the shifting of the piston within its cylinder.

3. In an earth working device adapted to be moved across the surface of the ground, a tiltable earth carrying means having an earth receiving edge, a draft frame,fmechanism for connecting said draft frame with a suitable tractive means, said mechanism including a cylinder carried by said frame, a piston'in said cylinder', means adapted to connect said piston with said tractive mechanism, means for establishing communication between the opposite extremities of said cylinder, including a valve mechanism, and actuator means for said earth receiving means which is operable in response tosaid piston.

4l. In an earth working device adapted to be moved across the surface ofthe ground, a tiltable earth carrying means having an earth receiving edge, a draft frame, mechanism for connecting said draft frame with a suitable tractive` means, said mechanism including a cylinder carried by said frame, a piston in said cylinder, means adapted to connect said piston with said tractive mechanism, means for establishing communication between the opposite extremities of said cylinder, including a valve mechanism, and actuator means for said earth receiving means which is operable in response to said piston,

and resilient means for continuously acting in a given direction on said actuator mechanism.

5. In earth working apparatus adapted to be moved across the surface of the ground, a tiltable earth receiving means, draft means for urging said earth receiving means across the surface of the ground, hydraulic mechanism providing a coupling between said draft means and suitable tractive means, and means for actuating said earth receiving means, said` actuating means being operable inresponse to said hydraulic mechanism;

6. In an earth working apparatus adapted to be moved across the'surface of the ground, a tiltable earth receiving bowl, a draft frame for urging said bowl across the surface of the ground, hydraulic mechanism providing a coupling between the draft framel and suitable tractive means,'said hydraulic mechanism including a iston and piston rod shiftablewithin a cylinder, and a fluid body for locking saidv piston against movement within said cylinder, land bowl actuating mechanism operable in response to said hydraulic mechanism.

7. In an earth working apparatus adapted to'be movedlacross the surfacev ofv the: ground, a ktiltable earth receiving :bowl,ea draft rframe therefor, hydraulic `mechanism Y providing a coupling between said. frame and a suitable tractive' means, an actuator member` for engagmg said bowl `to eflectthe tiltlngthereof,

and` means lconnecting said l actuator member with said hydraulic f mechanism, whereby said'actuatorwill bemoved in response to y said hydraulic mechanism. y 8. In an earth worlnng apparatus adapted to `be moved across .the surface of the ground, a tiltable earth receiving bowl, a draft frame therefor, hydraulickr mechanism providing a `coupling vbetween the draftframe andsuitable tractive means,said mechanism including` a piston and a piston rod shiftable within .a cylinder, means for directing iuid from one side of said piston to theiopposite side thereof, remotely controlledl valve-mechanism vfoi` controlling" the Y flow" off fluid between lthe opposite sides of said piston, and an actuating mechanism for controllingthe shiftingfof vtractive means, a shiftable bowl actuating mechanism connected with "said hydraulic mechanism., said bowl actuating mechanism being shifted in one direction in response to a pulling force applied "to'said hydraulic mechanism by said tractive means, yand resilient means for urging said 'bowl actuating means inthe opposite direction.l

10. In an earth working apparatus adaptf ed to be moved across the surface of the ground, a tiltable earth receiving bowl, a

kdraft frame for urging said bowl across the surface of the ground, hydraulic mechanism providing a coupling between the draft frame and suitable tractive means, said hydraulic 'mechanism including a piston and an extensible piston rod shiftable within a cylinder, and a fluid body for locking said pis- ,K

ton against movement within said cylinder, and bowlv actuating mechanism operable in response to said hydraulic mechanism.

11. In an earth moving device adaptedto be moved across the surface ofthe ground, a

on said frame, actuatingmeans engageable -with the earth carrying `means for tilting same, and a hydraulic mechanism connected with said actuating means, said hydraulic mechanism being adapted for connection with ay tractive .means and shiftable in response to the force yexerted by such tractive means. v

l2. In an earth moving device adapted to bemoved across thesurface of the ground, a

draft frame, tiltable earth carrying means fie VL l f v @$35,348

draft frame, tiltable earth carrying means on said" rame,' actuating-means engageable with the*l earth carrying means for tilting same, 'and aY hydraulic mechanism connected with said actuating means, said hydraulic mechanism, including a cylinder and -a piston reciprocable therein, adapted for connection With a tractive means and shiftable in response to the forceexerted by such tractive means.

13. In* an'earth moving device adapted to he moved across the surface of the ground, a draft'frame, tiltable earth carrying means on. said` frame, actuating means engageable with the earth carrying means for tilting same, a hydraulic mechanism connected with saidV actuating means,vsaid hydraulic mechanismbeing adapted Jfor connection fWith a tractive means and shiftable in response to the force exerted bysuch tractive means,` and' nieans for remotely controlling the operative functioning of said hydraulic mechanism.

f In Witness whereof, I have hereunto subscribed my naine.y i

f RAYMOND L, HARRisoN. 

